XPS RAM failed together ... passed individually

[jannett]

Working on one of those huge Dell XPS systems (white with red trim) and PC Doc CPU/Memory test failed but all RAM passed in first slot individually. Do I automatically replace the board? Is there really anything other than a BIOS revision that I could otherwise check first? There are 6 memory slots and the process to pass all RAM was exhaustive so efficiency is key here. Thanks.

 

[Tradesman1]

If all pass memtest individually would guess CPU or mobo, sad part is can't make adjustments to voltage or timings that might 'fix' things, so I'd prob look to a new mobo....well, a BIOS update might help if available, might check and see if available

 

[h3sham]

could be one of the DIMMS gone bad u gonna have to test combos till u figure out which one it is , but yea worst case scenario is u gonna have to get a new board best case u only lose 1 ram and continue with 5